The information regarding Β the number of members in a group and the minutes each member speaks during the presentation.
Members Β 2 Β Β 3 Β Β 4 Β 5 Β ------------(Considering as x coordinate)
Minutes Β Β Β 11 Β Β 8 Β Β 5 Β 2 -------------(Considering as y coordinate)
Slope between ordered pair
As slope(m) between two points [tex](x_{1},y_{1}),and (x_{2},y_{2})[/tex] Β is given by the formula Β , m= [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]
=[tex]\frac{8-11}{3-2}=\frac{5-8}{4-3}=\frac{2-5}{5-4}=\frac{11-2}{2-5}= -3[/tex]
As slope between any two ordered pair is same, showing that it is a linear relationship.
As you can see x coordinate increases y coordinates,that is minutes each member speaks decreases. So, this relationship is linear decreasing.
